<template>
  <div id="app">
    <div>
      <span>姓名:</span>
      <input type="text" v-model="uname" />
    </div>
    <div>
      <span>年龄:</span>
      <input type="number" v-model.number="age" />
    </div>
    <div>
      <span>性别:</span>
      <select v-model="flag">
        <option value="男">男</option>
        <option value="女">女</option>
      </select>
    </div>
    <div>
      <button @click="add">添加/修改</button>
    </div>
    <div>
      <table border="1" cellpadding="10" cellspacing="0">
        <tr>
          <th>序号</th>
          <th>姓名</th>
          <th>年龄</th>
          <th>性别</th>
          <th>操作</th>
        </tr>
        <tr v-for="(item, index) in list" :key="item.id">
          <td>{{ index + 1 }}</td>
          <td>{{ item.uname }}</td>
          <td>{{ item.age }}</td>
          <td>{{ item.sex }}</td>
          <td>
            <button @click="del(item.id)">删除</button>
            <button @click="bj(item.id)">编辑</button>
          </td>
        </tr>
      </table>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      list: [
        {
          id: 0,
          uname: "Tom",
          age: "19",
          sex: "男",
        },
        {
          id: 1,
          uname: "Jone",
          age: "21",
          sex: "女",
        },
      ],
      uname: "",
      age: 0,
      flag: false,
      stadus: false,
    };
  },
  methods: {
    add() {
      if (!this.stadus) {
        if (this.uname && this.age) {
          const obj = {
            id: Date.now(),
            uname: this.uname,
            age: this.age,
            sex: this.flag,
          };
          // this.list.push(obj)
          this.list = [...this.list, obj];
        } else {
          alert("请输入必填项");
        }
      } else {
        this.list.forEach((item) => {
          if (item.id === this.stadus) {
            item.uname = this.uname;
            item.age = this.age;
            item.sex = this.flag;
          }
        });
        this.stadus = false;
      }
      this.uname = "";
      this.age = 0;
      this.flag = false;
    },
    del(id) {
      this.list = this.list.filter((item) => {
        return item.id !== id;
      });
    },
    bj(id) {
      let item = this.list.find((item) => item.id === id);
      this.uname = item.uname;
      this.age = item.age;
      this.flag = item.sex;
      this.stadus = id;
    },
  },
};
</script>
